āi, aī
sad; pity
Phonosemantic compound. 口 represents the meaning and 衣 represents the sound.
Evolution

Bronze script
Early Western Zhou (~1000 BC)
Seal script
Shuowen (~100 AD)
Clerical script
Eastern Han dynasty (25-220 AD)Regular script
ModernDefinitions
Component uses
Sound component in 1 character (0 verified)
Sources